Implementation and Application of Practical Traveling-Wave-Based Directional Protection in UHV Transmission Lines

被引：76

作者：

Dong, Xinzhou ^{[1
]}

Luo, Shuxin ^{[1
]}

Shi, Shenxing ^{[1
]}

Wang, Bin ^{[1
]}

Wang, Shiyong ^{[2
]}

Ren, Li ^{[1
]}

Xu, Fei ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Elect Engn, State Key Lab Control & Simulat Power Syst & Gene, Beijing 100084, Peoples R China

[2] State Grid Beijing Elect Power Co, Beijing 100031, Peoples R China

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2016年 / 31卷 / 01期

基金：

北京市自然科学基金; 中国国家自然科学基金;

关键词：

Directional protection; power system protection; prototype implementation; traveling wave; ultra-high-speed protection; ultra-high-voltage (UHV) transmission line; wavelet transform; RELAY; TRANSFORM; VOLTAGE; MODELS;

D O I：

10.1109/TPWRD.2015.2458933

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

080906 [电磁信息功能材料与结构]; 082806 [农业信息与电气工程];

摘要：

Traveling-wave-based protection is becoming attractive in ultra-high-voltage (UHV) transmission systems due to the requirement for high-speed protection. However, the poor transfer characteristics of coupling capacitor voltage transformers (CCVTs) for high-frequency voltage have strictly limited its application. A novel traveling-wave-based protection scheme considering the characteristics of CCVTs and current transformers is proposed in this paper. The dyadic wavelet transform is used to extract the polarities of voltage and current traveling waves for fault direction identification. A prototype is further developed for practical applications. Extensive laboratory tests are performed to assess the performance of the developed scheme. The prototype has been applied to the 750-kV substations in China and an external fault was recorded during the operation period, validating the effectiveness and reliability of the proposed protection principle.

引用

页码：294 / 302

页数：9

共 22 条

[1]

Directional traveling-wave protection based on slope change analysis [J].